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Finding the Fourth Proportional to 171,720.49, 257,577.90 and 47,061.49

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Solution

The fourth proportional to 171,720.49, 257,577.90 and 47,061.49 is: 70,591.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,720.49 : 257,577.90 = 47,061.49 : x
  2. Step 2: Convert to fraction form
    171,720.49/257,577.90 = 47,061.49/x
  3. Step 3: Cross multiply
    171,720.49x = 257,577.90 × 47,061.49
  4. Step 4: Simplify right side
    171,720.49x = 12,121,999,765.07
  5. Step 5: Solve for x
    x = 12,121,999,765.07/171,720.49
  6. Step 6: Final answer
    x = 70,591.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.